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	Effect of Ag promoter on redox properties and catalytic performance of Ag-Mo-P-O catalysts for oxidative dehydrogenation of propane
	Zhang, X ; Wan, HL ; Wan HL(万惠霖) ; Weng, WZ ; Weng WZ(翁维正) ; Yi, XD ; Yi XD(伊晓东)
	2003-08-29
关键词	oxidative dehydrogenation of propane redox properties promoter Ag molybdenum-phosphate catalyst
英文摘要	The influence of addition of sliver ions on the redox properties and catalytic performance of molybdenum-phosphate catalyst in oxidative dehydrogenation (ODH) of propane has been investigated. MoO3 and AgMoO2PO4 have been detected in Ag-doped Mo-P-O catalysts. The redox properties have been characterized by H-2-temperature-programmed reduction (TPR), electronic paramagnetic resonance (EPR) and X-ray photoelectron spectroscopy (XPS). The catalytic performance of MoO3, Ag2O, AgMoO2PO4 and Ag-doped Mo-P-O catalysts has also been examined. The incorporation of Ag improved the number of Mo5+ species and the reducibility of the catalysts. The Ag-doped catalysts favor activity and selectivity in ODH of propane higher than the undoped catalyst. The best catalyst was obtained with Ag/Mo ratio of 0.3 and MoO3/AgMoO2PO4 ratio of 1.1. The influence of promoter Ag' on redox properties and catalytic performance is due to forming redox couple "Ag-0 + Mo6+ double left right arrow Ag+ + Mo5+" and the synergetic effect originating from "coherent interface" between MoO3 and AgMoO2PO4. (C) 2003 Elsevier B.V. All rights reserved.
语种	英语
出版者	ELSEVIER SCIENCE BV
内容类型	期刊论文
源URL	[http://dx.doi.org/10.1016/S0169-4332(03)00837-7]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Zhang, X,Wan, HL,Wan HL,et al. Effect of Ag promoter on redox properties and catalytic performance of Ag-Mo-P-O catalysts for oxidative dehydrogenation of propane[J],2003.
APA	Zhang, X.,Wan, HL.,万惠霖.,Weng, WZ.,翁维正.,...&伊晓东.(2003).Effect of Ag promoter on redox properties and catalytic performance of Ag-Mo-P-O catalysts for oxidative dehydrogenation of propane..
MLA	Zhang, X,et al."Effect of Ag promoter on redox properties and catalytic performance of Ag-Mo-P-O catalysts for oxidative dehydrogenation of propane".(2003).

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